<template>
<div>
  <div class="search">
    <input v-model="keyword" class="search-input" type="text" placeholder="请输入城市名或拼音"/>
  </div>
  <div v-show="keyword" class="search-content" ref="search">
    <ul>
      <li class="search-item border-bottom"
          v-for="item of list"
          :key="item.id"
          @click="handleCityClick(item.name)"
      >
      {{item.name}}
      </li>
      <li v-show="hasNoData" class="search-item border-bottom">没有找到匹配数据</li>
    </ul>
  </div>
</div>
</template>

<script>
import { mapMutations } from 'vuex'
import Bscroll from 'better-scroll'
export default {
  name: 'CitySearch',
  props: {
    cities: Object
  },
  data () {
    return {
      keyword: '',
      list: [],
      timer: null
    }
  },
  methods: {
    handleCityClick (city) {
      // this.$store.dispatch('changeCity', city)
      this.changeCitym(city)
      this.$router.push('/')
    },
    ...mapMutations(['changeCitym'])
  },
  computed: {
    hasNoData () {
      return !this.list.length
    }
  },
  watch: {
    keyword () {
      if (this.timer) {
        clearTimeout(this.timer)
      }
      if (!this.keyword) {
        this.list = []
        return
      }
      this.timer = setTimeout(() => {
        const result = []
        for (let i in this.cities) {
          this.cities[i].forEach((value) => {
            if (value.spell.indexOf(this.keyword) > -1 ||
              value.name.indexOf(this.keyword) > -1) {
              result.push(value)
            }
          })
        }
        this.list = result
      }, 100)
    }
  },
  mounted () {
    this.scroll = new Bscroll(this.$refs.search)
  }
}
</script>

<style type="text/stylus" lang="stylus" scoped>
  @import '~styles/varibles.styl'
  .search
    height:.72rem
    padding : 0 .1rem
    background : $bgColor
    .search-input
      width :100%
      box-sizing :border-box
      height :.62rem
      line-height : .62rem
      text-align :center
      border-radius : .06rem
      color :#666
      padding : 0 .1rem
  .search-content
    z-index: 1
    overflow :hidden
    position :absolute
    top: 1.58rem
    left :0
    right :0
    bottom: 0
    background:#eee
    .search-item
      line-height : .62rem
      padding-left: .2rem
      background :#fff
      color :#666
</style>
